Cast Iron Pneumatic Knife Valve
Product Details
Pneumatic knife gate valves provide reliable and efficient flow control since they are constructed for throttling and on-off service. They are available in various designs, including wafer and flanged versions, with NBR, EPDM or metal seat ring seals. They can be controlled pneumatically, that contributing to automation.
Key Features
Designed for Tough Media
Automatic Control
Leak-Proof Sealing
Corrosion-Proof
Working Mechanism
1.A pneumatic actuator controls the opening and closing of the knife gate valve.
2.The actuator uses compressed air to regulate the raising and lowering of the knife gate, thereby controlling the flow of fluid or slurry.
3.The sharp edge of the knife gate can effectively cut through thick materials, ensuring smooth fluid flow and preventing blockages
Parts of Pneumatic Knife Gate Valve
1.Valve Body: It is constructed of carbon steel, cast iron, or stainless steel.
2.Knife Gate: A gate having a cutting edge which can slice through solids and slurries.
3.Actuator: Compressed air operates valves automatically through pneumatic actuators.
4.Seals: Leak-proof performance is achieved through seals and packing.
5.Stem & Yoke: Enables movement by joining the actuator with the gate.
Specification
|
No. |
Parts |
Materials |
|
1 |
Body |
Ductile iron EN GJS 500-7/400-15 |
|
2 |
Wedge |
Ductile iron EN GJS 500-7/400-15 + EPDM |
|
3 |
Wedge coating |
NBR/EPDM EN 681-1 |
|
4 |
Wedge nut |
Copper Alloy |
|
5 |
Stem |
Stainless steel X20Cr13 |
|
6 |
Bonnet gasket |
EPDM EN681-1 |
|
7 |
Bonnet |
Ductile iron GGG50 |
|
8 |
O ring back sealing |
EPDM/NBR |
|
9 |
Stem collar |
EPDM/NBR |
|
10 |
O-ring |
EPDM/NBR |
|
11 |
O-ring |
EPDM/NBR |
|
12 |
Stuffing nut |
Copper Alloy |
|
13 |
Dust guard |
EPDM/NBR |
|
14 |
Hand wheel |
Ductile iron GGG50 |
|
15 |
Stem cap |
Ductile iron GGG50 |
Dimensions
| Size(In) | L | D1 | H | d | Bolt Size | No.Bolts | Weight(kg) |
| 2 | 42 | 114 | 470 | 45 | M16 | 4 | 7 |
| 2.5 | 43 | 127 | 501 | 60 | M16 | 4 | 8 |
| 3 | 45 | 146 | 550 | 74 | M16 | 4 | 13 |
| 4 | 45 | 178 | 600 | 93 | M16 | 8 | 15 |
| 5 | 52 | 210 | 715 | 116 | M16 | 8 | 23 |
| 6 | 52 | 235 | 795 | 138 | M20 | 8 | 35 |
| 8 | 65 | 292 | 995 | 188 | M20 | 8 | 45 |
| 10 | 70 | 356 | 1150 | 233 | M20 | 12 | 75 |
| 12 | 70 | 406 | 1375 | 281 | M22 | 12 | 115 |
| 14 | 70 | 470 | 1520 | 330 | M22 | 12 | 169 |





















